Crispy Chicken Sandwich vs SONIC Cheeseburger with Ketchup & Mayo: Sonic Nutrition Compared
Quick answer: Crispy Chicken Sandwich has 180 fewer calories than SONIC Cheeseburger with Ketchup & Mayo (520 vs 700). Protein is 6 g higher in SONIC Cheeseburger with Ketchup & Mayo (30 g vs 24 g). Sodium is 110 mg lower in SONIC Cheeseburger with Ketchup & Mayo (1360 mg vs 1470 mg).
Crispy Chicken Sandwich vs SONIC Cheeseburger with Ketchup & Mayo
One serving each, as Sonic prints it.
The short answer
Crispy Chicken Sandwich has 180 fewer calories than SONIC Cheeseburger with Ketchup & Mayo (520 vs 700). Protein is 6 g higher in SONIC Cheeseburger with Ketchup & Mayo (30 g vs 24 g). Sodium is 110 mg lower in SONIC Cheeseburger with Ketchup & Mayo (1360 mg vs 1470 mg).
| Nutrient | Crispy Chicken Sandwich | SONIC Cheeseburger with Ketchup & Mayo |
|---|---|---|
| Calories | 520 | 700higher |
| Total fat | 24 g31% DV | 41 ghigher53% DV |
| Saturated fat | 4.5 g23% DV | 11 ghigher55% DV |
| Trans fat | 0 g | 0 g |
| Cholesterol | 50 mg17% DV | 65 mghigher22% DV |
| Sodium | 1470 mghigher64% DV | 1360 mg59% DV |
| Carbohydrates | 52 g19% DV | 52 g19% DV |
| Fiber | 4 ghigher14% DV | 2 g7% DV |
| Sugars | 10 g | 12 ghigher |
| Protein | 24 g | 30 ghigher |
| Protein per 100 calories | 4.6 g | 4.3 g |
| Share of a 2,000-calorie day | 26% | 35% |
“Higher” marks the larger number only; it is not a judgement. % DV is the FDA Daily Value for a 2,000-calorie diet, shown for nutrients that have one.
Allergens in Sonic's guide
Sonic's allergen guide does not list Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo as a single item (it lists parts only, or the item is not in it), so we cannot compare allergens here. Check the allergen menu.
This lists what Sonic marks as contained. Cross-contact can happen in the kitchen, so use the allergen menu if you avoid an allergen.
Crispy Chicken Sandwich vs SONIC Cheeseburger with Ketchup & Mayo: Questions
Answers use only the numbers in Sonic's guides.
Which has more calories, Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo?
SONIC Cheeseburger with Ketchup & Mayo has more calories: 700 against 520 for Crispy Chicken Sandwich. Figures are from Sonic's nutrition guides.
Which has more protein, Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo?
SONIC Cheeseburger with Ketchup & Mayo has more protein: 30 g against 24 g for Crispy Chicken Sandwich.
Which has more sodium, Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo?
Crispy Chicken Sandwich has more sodium: 1470 mg against 1360 mg for SONIC Cheeseburger with Ketchup & Mayo.
Which has more sugar, Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo?
SONIC Cheeseburger with Ketchup & Mayo has more sugar: 12 g against 10 g for Crispy Chicken Sandwich.
Do Crispy Chicken Sandwich and SONIC Cheeseburger with Ketchup & Mayo contain the same allergens?
Sonic's allergen guide does not list Crispy Chicken Sandwich or SONIC Cheeseburger with Ketchup & Mayo as a single item (it lists parts only, or the item is not in it), so we cannot compare allergens here. Check the allergen menu.
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Where the Numbers Come From
We are an independent guide, not Sonic or Inspire Brands.
Sources
- Sonic's Fall 2026 nutrition guide: every value for regular menu items.
- Sonic's Fall 2026 allergen guide: the allergens marked for each item.
- Sonic's November 2026 brochure: limited-time items, flagged on the page.
What it does not do
- It adds, multiplies and compares Sonic's numbers. It does not estimate anything.
- It leaves out items that are not in the Fall 2026 guide, and drink add-ins and burger add-ons.
- It does not compare prices, because Sonic publishes none.
- It does not call any item healthier. “Higher” only marks the larger number.
Sonic publishes no menu prices. Prices on Sonic Menu are not Sonic's: where we could, we show a typical pickup price measured by Drive Thru Index across a sample of Sonic restaurant pages (checked November 6, 2026); for a few items we could not measure, a rough estimate of our own. They are not live prices from any single restaurant. Exact menu prices, combo meal promotions, and product availability vary by independent franchise location, drive-in stall vs. drive-thru, and delivery service app markups (DoorDash, Uber Eats, Grubhub).